mic drop
noun [ C ] US informal uk/ˈmaɪk ˌdrɒp/ us/ˈmaɪk ˌdrɑːp/
扔麦克风（为加深观众印象，在演讲或表演结束后故意扔掉麦克风）
an act of intentionally dropping a microphone after you have given a speech or performance, as a way of making an impressive ending
In an emotional speech, she thanked her fans and finished with a mic drop. 在情绪激动的发言中，她感谢了自己的粉丝，最后还扔了麦克风。